\documentclass{report}
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage{tikz}
\begin{document}
\resizebox{\textwidth}{!}{
\begin{tikzpicture}
\filldraw[draw=black,fill=RoyalBlue](0,-2) rectangle (2,0);
\filldraw[draw=black,fill=Cerulean](2,-1) rectangle (3,0);
\filldraw[draw=black,fill=Goldenrod](0,-5) rectangle (4,-3);
\filldraw[draw=black,fill=OrangeRed](4,-4) rectangle (5,0);
\filldraw[draw=black,fill=BurntOrange](2,-1) rectangle (4,0);
\end{tikzpicture}
}
\end{document}
